Lighting unit



FIGS. 1 and 2 are perspective views from opposite sides of a lighting unit showing my new design;

FIGS. 3 and 4 are opposite side views of the lighting unit of FIGS. 1 and 2; and,

FIG. 5 is a fragmentary bottom view of the lighting unit of FIGS. 1 and 2, with one of the panels being shown broken away for illustrative purposes only. 

CLAIM The ornamental design for a lighting unit, as shown and described. 